E`qui*dif"fer*ent (?), a. [Equi- + different: cf. F. équidifférent.] Having equal differences; as, the terms of arithmetical progression are equidifferent.
E`qui*dis"tance (?), n. Equal distance.
E`qui*dis"tant (?), a. [L. aequidistans, -antis; aequus equal + distans distant: cf. F. équidistant.] Being at an equal distance from the same point or thing. -- E`qui*dis"tant*ly, adv. Sir T. Browne.
E`qui*di*ur"nal (?), a. [Equi- + diurnal.] Pertaining to the time of equal day and night; -- applied to the equinoctial line. Whewell.
E"qui*form (?), a. [L. aequiformis; aequus equal + forma form.] Having the same form; uniform. -- E`qui*for"mi*ty (#), n. Sir T. Browne.
E`qui*lat"er*al (?), a. [L. aequilateralis; aequus equal + latus, lateris, side: cf. F. équilatéral.] Having all the sides equal; as, an equilateral triangle; an equilateral polygon.
Equilateral hyperbola (Geom.), one whose axes are equal. -- Equilateral shell (Zoöl.), one in which a transverse line drawn through the apex of the umbo bisects the valve, or divides it into two equal and symmetrical parts. -- Mutually equilateral, applied to two figures, when every side of the one has its equal among the sides of the other.
E`qui*lat"er*al, n. A side exactly corresponding, or equal, to others; also, a figure of equal sides.
E`qui*li"brate (?), v. t. [imp. & p. p. Equilibrated (?); p. pr. & vb. n. Equilibrating (?).] [L. aequilibratus in equilibrium; aequus equal + libra balance. See Equilibrium.] To balance two scales, sides, or ends; to keep even with equal weight on each side; to keep in equipoise. H. Spenser.
<! p. 505 !>
E`qui*li*bra"tion (?), n. 1. Act of keeping a balance, or state of being balanced; equipoise.
In . . . running, leaping, and dancing, nature's laws of equilibration are observed.
J. Denham.
2. (Biol.) The process by which animal and vegetable organisms preserve a physiological balance. H. Spenser.
E`qui*lib"ri*ous (?), a. Evenly poised; balanced. Dr. H. More. -- E`qui*lib"ri*ous*ly, adv.
E*quil"i*brist (?), n. One who balances himself in unnatural positions and hazardous movements; a balancer.
When the equilibrist balances a rod upon his finger.
Stewart.
E`qui*lib"ri*ty (?), n. [L. aequilibritas equal distribution. See Equilibrium.] The state of being balanced; equality of weight. [R.] J. Gregory.
E`qui*lib"ri*um (?), n.; pl. E. Equilibriums (#), L. Equilibria (#). [L. aequilibrium, fr. aequilibris in equilibrium, level; aequus equal + libra balance. See Equal, and Librate.] 1. Equality of weight or force; an equipoise or a state of rest produced by the mutual counteraction of two or more forces.
2. A level position; a just poise or balance in respect to an object, so that it remains firm; equipoise; as, to preserve the equilibrium of the body.
Health consists in the equilibrium between those two powers.
Arbuthnot.
3. A balancing of the mind between motives or reasons, with consequent indecision and doubt.
Equilibrium valve (Steam Engine), a balanced valve. See under Valve.
E`qui*mo*men"tal (?), a. [Equi- + momental.] (Mech.) Having equal moments of inertia.
Two bodies or systems of bodies are said to be equimomental when their moments of inertia about all straight lines are equal each to each.
Equimomental cone of a given rigid body, a conical surface that has any given vertex, and is described by a straight line which moves in such manner that the moment of inertia of the given rigid body about the line is in all its positions the same.
E`qui*mul"ti*ple (?), a. [Equi- + multiple: cf. F. équimultiple.] Multiplied by the same number or quantity.
E`qui*mul"ti*ple, n. (Math.) One of the products arising from the multiplication of two or more quantities by the same number or quantity. Thus, seven times 2, or 14, and seven times 4, or 28, are equimultiples of 2 and 4.
E*qui"nal (?), a. See Equine. "An equinal shape." Heywood.
E"quine (?), a. [L. equinus, fr. equus horse; akin to Gr. &?;, Skr. a&?;va, OS. ehu, AS. eh, eoh, Icel. j&?;r, OIr. ech, cf. Skr. a&?; to reach, overtake, perh. akin to E. acute, edge, eager, a. Cf. Hippopotamus.] Of, pertaining to, or resembling, a horse.
The shoulders, body, things, and mane are equine; the head completely bovine.
Sir J. Barrow.
||E*quin"i*a (?), n. [NL. See Equine.] (Med.) Glanders.
E`qui*noc"tial (?), a. [L. aequinoctials, fr. aequinoctium equinox: cf. F. équinoxial. See Equinox.] 1. Pertaining to an equinox, or the equinoxes, or to the time of equal day and night; as, the equinoctial line.
2. Pertaining to the regions or climate of the equinoctial line or equator; in or near that line; as, equinoctial heat; an equinoctial sun.
3. Pertaining to the time when the sun enters the equinoctial points; as, an equinoctial gale or storm, that is, one happening at or near the time of the equinox, in any part of the world.
Equinoctial colure (Astron.), the meridian passing through the equinoctial points. -- Equinoctial line (Astron.), the celestial equator; -- so called because when the sun is on it, the nights and days are of equal length in all parts of the world. See Equator.
Thrice the equinoctial line
He circled.
Milton.
-- Equinoctial points (Astron.), the two points where the celestial and ecliptic intersect each other; the one being in the first point of Aries, the other in the first point of Libra. -- Equinoctial time (Astron.) reckoned in any year from the instant when the mean sun is at the mean vernal equinoctial point.
E`qui*noc"tial, n. The equinoctial line.
E`qui*noc"tial*ly, adv. Towards the equinox.
E"qui*nox (?), n. [OE. equinoxium, equenoxium, L. aequinoctium; aequus equal + nox, noctis, night: cf. F. équinoxe. See Equal, and Night.] 1. The time when the sun enters one of the equinoctial points, that is, about March 21 and September 22. See Autumnal equinox, Vernal equinox, under Autumnal and Vernal.
When descends on the Atlantic
The gigantic
Stormwind of the equinox.
Longfellow.